downgrade Filament libs to v1.34.2 for Windows

ios/include/backend/platforms/PlatformWGL.h

@@ -23,9 +23,8 @@
 #include "utils/unwindows.h"
 
 #include <backend/platforms/OpenGLPlatform.h>
-#include <backend/DriverEnums.h>
 
-#include <vector>
+#include <backend/DriverEnums.h>
 
 namespace filament::backend {
 
@@ -47,9 +46,6 @@ protected:
 
     void terminate() noexcept override;
 
-    bool isExtraContextSupported() const noexcept override;
-    void createContext(bool shared) override;
-
     SwapChain* createSwapChain(void* nativewindow, uint64_t flags) noexcept override;
     SwapChain* createSwapChain(uint32_t width, uint32_t height, uint64_t flags) noexcept override;
     void destroySwapChain(SwapChain* swapChain) noexcept override;
@@ -61,8 +57,6 @@ protected:
     HWND mHWnd = NULL;
     HDC mWhdc = NULL;
     PIXELFORMATDESCRIPTOR mPfd = {};
-    std::vector<HGLRC> mAdditionalContexts;
-    std::vector<int> mAttribs;
 };
 
 } // namespace filament::backend